# File lib/twitter/command.rb, line 21
      def process!
        command = ARGV.shift
        
        if !command.nil? && @@commands.include?(command.intern)
          send(command)
        else
          puts "\nUsage: twitter <command> [options]\n\nAvailable Commands:"
          Twitter::Command.commands.each do |c|
            puts "    - #{c}"
          end
        end
      end